package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;
    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * 保存更新attr以及级联表
     * @param attr
     */
    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
//        //第一步获取vo中的对象
//        AttrEntity attrEntity = new AttrEntity();
//        BeanUtils.copyProperties(attr, attrEntity);
//        //保存基本数据
//        this.save(attrEntity);
//        //保存关联关系
//        AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
//        //设置属性分组id
//        attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
//        //设置属性的id
//        attrAttrgroupRelationEntity.setAttrId(attr.getAttrId());
//        relationDao.insert(attrAttrgroupRelationEntity);
        AttrEntity attrEntity = new AttrEntity();
//        attrEntity.setAttrName(attr.getAttrName());
        BeanUtils.copyProperties(attr,attrEntity);
        //1、保存基本数据
        this.save(attrEntity);
        //2、保存关联关系
        if(attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId()!=null){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }
        //空指针异常经常出现
    }

    /**
     * 查询信息
     *
     * @param params
     * @param catelogId
     * @param attrType
     * @return
     */
    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String attrType) {
        //创建查询条件
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(attrType)? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode()) {
            queryWrapper.eq("catelog_id", catelogId);

        }
        //模糊查询
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        //进行查询
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper

        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            if ("base".equalsIgnoreCase(attrType)) {
                //获取分组名字
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId()!=null) {
                    Long attrGroupId = attrId.getAttrGroupId();
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrGroupId);
                    if (attrGroupEntity != null) {
                        String attrGroupName = attrGroupEntity.getAttrGroupName();
                    System.out.println(attrGroupName);
                        attrRespVo.setAttrName(attrGroupName);
                    }

                }
            }

            //设置分类信息
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }


            //设置分类和分组的名字
            return attrRespVo;
        }).collect(Collectors.toList());

        //设置处理的结果集
        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo attrRespVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity,attrRespVo);

        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //设置分组信息
            AttrAttrgroupRelationEntity attrAttrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if (attrAttrgroupRelation != null) {
                attrRespVo.setAttrGroupId(attrAttrgroupRelation.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrAttrgroupRelation.getAttrGroupId());
                if (attrGroupEntity != null) {
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());

                }
            }
        }


        //设置分类id
        Long catelogId = attrEntity.getCatelogId();
        Long[] cateLogPath = categoryService.findCateLogPath(catelogId);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        attrRespVo.setCatelogPath(cateLogPath);
        if (categoryEntity != null) {
            //设置分类的名字
            attrRespVo.setCatelogName(categoryEntity.getName());
        }

        return attrRespVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        //基本修改完成
        this.updateById(attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attr.getAttrId());
            //统计次数
            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count > 0) {
                //修改操作
                //修改分组关联

                relationDao.update(attrAttrgroupRelationEntity,new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId()));

            }else {
                //新增操作
                relationDao.insert(attrAttrgroupRelationEntity);
            }
        }


    }

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroudId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id",attrgroudId));
        List<Long> collect = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if (collect == null || collect.size() == 0) {
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(collect);
        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
//        relationDao.delete(new QueryWrapper<>().eq("attr_id", 1L).eq("attr_group_id", 1L));
        //只发一次删除，完成批量删除
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, attrAttrgroupRelationEntity);
            return attrAttrgroupRelationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取没有关联的属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
//        IPage<AttrEntity> page = null;
//        //当前分组只能关联自己所属的分类里面的所有属性
//        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
//        Long catelogId = attrGroupEntity.getCatelogId();
//        //当前分组只能关联别的分组没有引用的分组属性
//            //当前分组只能关联别的分组没有引用的属性
//        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId).ne("attr_group_id",attrgroupId));
//        //当前分类下的其他分组
//        List<Long> collect = group.stream().map((item) -> {
//            return item.getAttrGroupId();
//        }).collect(Collectors.toList());
//        System.out.println("当前分类下的其他分组{a}"+collect);
//        if (collect.size() > 0 && collect != null) {
//            List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
//            List<Long> attrIds = groupId.stream().map((item) -> {
//                return item.getAttrId();
//            }).collect(Collectors.toList());
//
//            //这些分组关联的属性
//            //从当前分类的所有属性中移除这些属性
//            //条件
//            QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId);
//            if (attrIds != null && attrIds.size() > 0) {
//                queryWrapper.notIn("attr_id", attrIds);
//            }
//            String key = (String) params.get("key");
//            if (!StringUtils.isEmpty(key)) {
//                //模糊查询的判断  是否添加模糊查询
//                queryWrapper.and((w)->{
//                    w.eq("attr_id",key).or().like("attr_name",key);
//                });
//            }
//            page = this.page(new Query<AttrEntity>().getPage(params), queryWrapper);
//
//        }
//        if (page == null) {
//            return null;
//        }else {
//            PageUtils pageUtils = new PageUtils(page);
//
//            return pageUtils;
//        }



        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;

    }

}